Data packing method of audio communication

Abstract

The invention discloses a data packing method of audio communication. The data packing method comprises the steps as follows: storing the data to be transmitted to a data field formed by data elements, appending length bits for storing length data of the data field at the front of the data field, appending CRC8 check bits for storing a check value obtained by performing CRC check on the length bits and the data field at the back of the data field to ensure the accuracy of the data in the data field; respectively appending a frame head with relative high resolution and a frame tail with relative high resolution on an analog waveform at the beginning and at the ending of the data package during packing; in addition, performing odd-even check on each byte and appending the check value at the back of the byte after packing to effectively ensure the accuracy of the data of each byte. The analog waveform of the invention has excellent resolution and reliable performance for data recognition and decoding, thereby reducing the error rate. The data packing method of audio communication of the invention improves compatibility between an audio POS and an intelligent device. The coding and decoding of the software are easy to realize and the code consumption is small.

Description

technical field [0001] The invention relates to a data transmission system, in particular to a data grouping method for audio communication. Background technique [0002] With the deepening of e-commerce applications, the market needs more and more technologies that can meet the acceptance of near-field transactions through mobile terminals such as mobile phones. The audio-based communication technology between smart devices and POS machines is gradually becoming familiar to people. Specifically, the smart device is installed with an APP for encoding audio data, and the data is encoded according to the agreed encoding format and then output to the audio port for playback, so as to realize the conversion of digital signals into analog signal representations, and the audio POS machine receives and processes the analog signals, and Convert it into a digital signal, and then decode the digital signal to get the data, and vice versa. [0003] Most of the current audio POS uses ...

AI Technical Summary

Problems solved by technology

[0003] Most of the current audio POS uses ready-made serial communication methods, such as Manchester encoding; although mature communication encoding methods have been widely used, due to the differences in smart platforms, the diversification of operating systems, and the current Android ecosystem. Fragmentation leads to poor compatibility and high bit error rate of the traditional coding method under the smart device platform. The traditional communication coding method requires the relative normalization of hardware, making it unable to truly meet the needs of stable and efficient communication between smart devices and audio POS machines.

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